Improvement in tool-handles



c. ALHARDY & AWE; STAYNER. TOOL-HANDLE.

Nq.179,111. Patented'J'une 27/1876.

N.FE|'ER& PNOTO-LITHDGRAPHH. WASHINGTQN. D. C.

l the key and cushion removed for repairs.

"UNITED STATES CHARLES A. HARDY AND AUGUSTUS E. STAYNER, OF SHEFFIELD, ENGLAND 5 SAID STAYNER ASSIGNOR TO SAID HARDY.

IMPROVEMENT IN TOOL-HANDLES.

Specification forming part of Letters Patent No. 179,] [1, dated J one 27, 1876; application filed March 4, 1876.

To all whom it may concern Be it known that we, CHARLES ATWooD HARDY and AUGUSTUS EDWARD STAYNER, of Sheffield, England, have invented a new and useful Improvement in Tool-Handles, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings.

The object ofour invention is the making of a pick or similar tool detachable from its handle at pleasure, (though firmly held to its handle when so desired,) and whose form shall be so narrow as especially to adapt it for holiug or undermining.

Figure l is a longitudinal section of the socket with the blade inserted and the key driven in place. 'Fig. 2 is a perspective view of the socket with the handle in position. Fig. 3 represents a metallic socket having chambers for the introduction of the blade-cushion and key, and the handle of the tool. Fig. 4. shows the blade, which has a recess upon its upper surface. Fig. 5 is the cushion, which may be made of copper, soft iron, or any equivalent substance. Fig. 6 is the key, preferably of forged steel, hardened at both ends to prevent battering and is tapered from end to end.

a is the chamber for the reception of the blade. d and d are the pins, which in both key and cushion retain them within the socket.

The dotted lines 6 indicate the groove Withinthe socket in each cheek, in which the pin d in the key travels. f is a vertical slot in the checks, in which the pin din the cushion travels. When desired, these pins can be driven out of the holes containing them, and As these parts are made to gage, the substitution. of new for old or defective ones is easy and rapid. ii are shoulders upon the blade, which engage with upper part of socket B, at h h. S is the space for the insertion of the handle, and is wider at its upper part,just beneath the keyway, than midway'in its length. Room is thus given for the expansion of the handle by the wedges w w. vThese wedges are in serted in the end of the handle before driving it into the socket.

To prepare the tool for use, the blade is inserted in the socket, the upper part of the socket h h entering the recess in the blade. Thus a smooth surface is presented, even with the blade. The blade is then fastened by driving in the key 0, which, being tapered or running upon an inclined plane, as may be preferred, or both, raises the cushion b, which presses closely against the under side of the blade.

The office of the cushion is the absorption of the vibration of the blow, preventing it from reaching and loosening the key; also, to furnish a bearing-surface beneath the blade, which shall always be parallel to said blade; also, to keep the key a proper distance from the blade, and thus avoid the jamming which would occur if they were'in contact.

We claim as our invention- 1. The socket B for the reception of both handle and pick, provided with slot f and groove 6, substantially as herein specified.

2. The socket B, in combination with blade 9, cushion I) provided with pin (1, and key 0 provided with pin 61, substantially as specified.

CHARLES ATWOOD HARDY. AUGUSTUS ED WARD STAYN ER. Witnesses W. MILToN LOCKE, JOHN FERGUSON. 

